(19)

(11)

EP 3 033 911 A1

(12)

(43) Date of publication: 22.06.2016 Bulletin 2016/25 (21) Application number: 13891442.9 (22) Date of filing: 16.08.2013

(51) International Patent Classification (IPC):  H04W 52/02(2009.01) (86) International application number: PCT/CN2013/081634 (87) International publication number: WO 2015/021643 (19.02.2015 Gazette 2015/07)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME (71) Applicant: Nokia Solutions and Networks Oy 02610 Espoo (FI)	(72) Inventors: DU, Lei Beijing 100016 (CN) ZHANG, Yanji Beijing 100029 (CN) (74) Representative: Nokia Corporation et al Intellectual Property Department Karakaari 7 02610 Espoo 02610 Espoo (FI)